The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Apr. 29, 2003
Raymond Elijah Barnett, W. Apple Valley, MN (US);
Tuan Van Ngo, Eden Prairie, MN (US);
Scott Gary Sorenson, Lakeville, MN (US);
Raymond Elijah Barnett, W. Apple Valley, MN (US);
Tuan Van Ngo, Eden Prairie, MN (US);
Scott Gary Sorenson, Lakeville, MN (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A circuit () for use in a mass data storage device () has first () second () current driver circuits for providing write currents to the data transducer (). The first and second current levels are different, the second current level being lower than the first. The first current driver circuit () may be used to apply currents representing user data to the data transducer () and the second current driver circuit () may be used to apply currents representing servo information to the data transducer (). In addition, the first () and second () current drivers circuits may be operated at different frequencies. The first () and second () current driver circuits additionally may share at least some circuit components (--), and may operate at different write speeds.